1061605 has 8 divisors (see below), whose sum is σ = 1280664. Its totient is φ = 844800.

The previous prime is 1061597. The next prime is 1061609. The reversal of 1061605 is 5061601.

It can be written as a sum of positive squares in 4 ways, for example, as 79524 + 982081 = 282^2 + 991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1061605 - 2³ = 1061597 is a prime.

It is a super-2 number, since 2×1061605² = 2254010352050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (160083).

2^1061605 is an apocalyptic number.

It is an amenable number.

1061605 is a deficient number, since it is larger than the sum of its proper divisors (219059).

1061605 is an equidigital number, since it uses as much as digits as its factorization.

1061605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1061605 is about 1030.3421761726. The cubic root of 1061605 is about 102.0127178811.

It can be divided in two parts, 106 and 1605, that added together give a triangular number (1711 = T₅₈).

The spelling of 1061605 in words is "one million, sixty-one thousand, six hundred five".